Data Sheet

AD7403

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

16

15

14

MCLKIN

13

5

12

6

MDAT

11

10

9

AD7403

TOP VIEW

(Not to Scale)

Figure 5. AD7403 Pin Configuration

Table 10. AD7403 Pin Function Descriptions

Pin No.

Mnemonic

Description

1, 7

a 10 µF capacitor in parallel with a 1 nF capacitor.

2

Positive Analog Input.

3

4, 8

Ground 1. This pin is the ground reference point for all circuitry on the isolated side.

5, 6

NIC

9, 16

Ground 2. This pin is the ground reference point for all circuitry on the nonisolated side.

10, 12, 15

NIC

11

MDAT

Serial Data Output. The single bit modulator output is supplied to this pin as a serial data stream. The bits are

clocked out on the rising edge of the MCLKIN input and are valid on the following MCLKIN rising edge.

13

MCLKIN

Master Clock Logic Input. 5 MHz to 20 MHz frequency range. The bit stream from the modulator is propagated on

the rising edge of the MCLKIN.

14

8

7

6

MCLKIN

MDAT

5

AD7403-8

TOP VIEW

(Not to Scale)

Figure 6. AD7403-8 Pin Configuration

Table 11. AD7403-8 Pin Function Descriptions

Pin No.

Mnemonic

Description

1

a 10 µF capacitor in parallel with a 1 nF capacitor.

2

Positive Analog Input.

3

4

Ground 1. This pin is the ground reference point for all circuitry on the isolated side.

5

Ground 2. This pin is the ground reference point for all circuitry on the nonisolated side.

6

MDAT

Serial Data Output. The single bit modulator output is supplied to this pin as a serial data stream. The bits are

clocked out on the rising edge of the MCLKIN input and are valid on the following MCLKIN rising edge.

7

MCLKIN

Master Clock Logic Input. 5 MHz to 20 MHz frequency range. The bit stream from the modulator is propagated on

the rising edge of the MCLKIN.

8

Rev. B | Page 9 of 24